CN109532177B - A kind of three-layer co-extruded polyethylene label film and preparation method thereof - Google Patents
A kind of three-layer co-extruded polyethylene label film and preparation method thereof Download PDFInfo
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- CN109532177B CN109532177B CN201811626960.3A CN201811626960A CN109532177B CN 109532177 B CN109532177 B CN 109532177B CN 201811626960 A CN201811626960 A CN 201811626960A CN 109532177 B CN109532177 B CN 109532177B
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- -1 polyethylene Polymers 0.000 title claims abstract description 71
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 64
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 62
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 62
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 53
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 53
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 239000004615 ingredient Substances 0.000 claims abstract description 17
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 14
- 239000004701 medium-density polyethylene Substances 0.000 claims abstract description 14
- 238000000071 blow moulding Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 6
- 238000010096 film blowing Methods 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 claims description 2
- 239000002453 shampoo Substances 0.000 claims description 2
- 238000010101 extrusion blow moulding Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 19
- 238000005520 cutting process Methods 0.000 abstract description 15
- 230000000704 physical effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 100
- 239000010408 film Substances 0.000 description 92
- 239000011347 resin Substances 0.000 description 26
- 229920005989 resin Polymers 0.000 description 26
- 239000002994 raw material Substances 0.000 description 16
- 239000004743 Polypropylene Substances 0.000 description 15
- 229920001155 polypropylene Polymers 0.000 description 15
- 239000000155 melt Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 229920000092 linear low density polyethylene Polymers 0.000 description 3
- 239000004707 linear low-density polyethylene Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000004276 hyalin Anatomy 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920005630 polypropylene random copolymer Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Natural products C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/043—HDPE, i.e. high density polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density polyethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to printable and die-cuttable trilamellar membrane structure label materials, and more particularly to a kind of three-layer co-extruded polyethylene label film and preparation method thereof.Polyethylene label film provided by the invention includes outer layer, middle layer and internal layer, and outer layer, middle layer and internal layer obtain label film by three-layer co-extruded upper blow molding's technique, and blow-up ratio is controlled in 2-3.5.Outer layer is prepared by the following ingredient of content: high density polyethylene (HDPE) 70-85%, 10% ~ 20w% of polyethylene of metallocene catalysis, low density polyethylene (LDPE) 5% ~ 10%, and the sum of mass percent of each component is 100%.Middle layer is prepared by the following ingredient of content: high density polyethylene (HDPE) 75-90%, 10% ~ 25w% of polyethylene of metallocene catalysis.Internal layer is prepared by the following ingredient of content: 70% ~ 90w% of medium density polyethylene, low density polyethylene (LDPE) 10% ~ 30%.Label film of the present invention, which provides enough stiffness and excellent die-cutting performance and good vertical and horizontal, has balanced physical property.
Description
Technical field
The present invention relates to printable and die-cuttable trilamellar membrane structure label materials, and more particularly to a kind of three-layer co-extruded
Polyethylene label film and preparation method thereof.
Background technique
Consumer chooses in dazzling similar commodity, and product external packaging is the key factor for attracting consumer, and
The core of product external packaging is exactly label, and carrier of the label as brand plays crucial effect whether exquisite.And with economy
With high-tech development, product makes rapid progress, and people's lives have been equipped with more the outsourcing of product more towards convenient and leisure
High requirement.Label film on domestic market keeps the impetus of rapid growth, and is more widely applied, and marks
Label material will also develop to high-level, diversified direction.Same material should be used as far as possible in package design, separate and can be total to
The material deposited, and it is intended to material simple using structure, being easy circular regeneration.Meeting the premise for the functions such as pasting, printing
Under, the rupture that high performance label material avoids material in die cutting process is provided as far as possible, reduces the waste of material.Currently, mark
Label thin-film material classification specifically include that polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET),
Polyethylene (PE) etc..
CN201645946U discloses a kind of label film, it is characterised in that: it includes high pressure polyethylene surface layer (1), linear
Low density polyethylene (LDPE) articulamentum (2) and casing play (3)；The upper and lower surface of the casing play (3) is poly- by linea low density respectively
Ethylene articulamentum (2) is closely compounded with high pressure polyethylene surface layer (1).A kind of label film transparency of the utility model is good；Polypropylene
PP or high density polyethylene are as casing play, and stiffness is good, easy severing；Linear low density polyethylene LLDPE as articulamentum,
Adhesive fastness is strong, and transparency is high；The surface layer high pressure polyethylene LD, printing performance is good, surface no marking, non-crystal point.The invention is
By polypropylene PP or high density polyethylene as casing play, stiffness is good, and it is longitudinal and horizontal not provide label film itself
To physical property and to the influence of die-cutting performance.
CN1247127A discloses the system of a kind of in-mold labels three-layer co-squeezing biaxial stretching polypropylene paper and hyaline membrane
Make, spy with single screw rod extruder and sleeve can bleeder tool side feeding device twin-screw extruder processing procedure, to acrylic resin
And inorganic compositions, the extrudate of major and minor extruder is respectively obtained, confluence becomes paper layer or tree through same T-die
Rouge layer/foamed interlayer or resin layer/resin layer three ply board piece, then be cooled into, twin shaft extension, sided corona treatment, through rolling up
It takes into pearlescent synthetic paper and hyaline membrane.It mainly uses polypropylene for raw material, and the acrylic resin used is that melting is selected to refer to
Number (hereinafter referred to as MFI) 0.5-12 (230 °/2.16Kg ASTM D1238) is mostly the uniform poly- of cis- (ISOTACTIC)
Object is closed, it can be by selecting different MFI values and molecular weight distribution raw material, cooperation extension ratio is uniform to control mechanical strength and thickness
Property.Due to showing the relatively high modulus of vertical and horizontal using polypropylene, leading to label not is that can very comply with, and cannot be reached
Good label die-cutting performance, and polypropylene material printable surface performance is poor, needs by adding printable surface layer, there are the later periods
Use lamination problem between caused multiple layers of different materials.
A kind of multilayer blow moulding film being used to prepare label known to DE102007045117A1.The layer structure packet of the film
The sandwich layer that two outer layers and polypropylene miser for including polyethylene composition are constituted.Polypropylene miser is by the poly- of 5~25 weight %
The polypropylene of Noblen (PP-H), the polypropylene random copolymer (PP-RC) of 5~35 weight % and 40~80 weight %
Block copolymer (PP-BC).Core mixture is characterized in that material bending rigidity and the low share of punching performance poly- third can be promoted
Polyamino alkenyl object mixes the PP block copolymer of high share, can thus manufacture with high elastic modulus and low turbidity, and
It is to be developed for significantly curved surface.For much applying, it is desirable to which label film has higher bending stiffness.It is known
Inflation film be flexible.But due to thin-film multilayer material category is different, processed on common blow moulding film equipment steady
Qualitative difference influences the quality of film.
Summary of the invention
Based on the above the deficiencies in the prior art, technical problem to be solved by the present invention lies in provide a kind of polyethylene label
Film obtains the composite label film comprising outer layer, middle layer and internal layer by co-extrusion modling technique.The present invention selects polyethylene
For raw material, and pass through the design of layer structural formulation, provides enough stiffness and excellent die-cutting performance for label film, overcome
Polypropylene material complies with performance, and preferably squeezes resilience.Superficial layer of the present invention and middle layer add metallocene catalysis
Polyethylene, excellent die-cutting performance can be provided for label film.
The technical problems to be solved by the invention, which also reside in, provides a kind of preparation method of polyethylene label film, by adopting
With three-layer co-extruded upper blow molding's technique, the physical property of good vertical and horizontal can be provided by the control of blow-up ratio.
A kind of three-layer co-extruded polyethylene label provided in order to solve the above technical problem, the present invention provides embodiment is thin
Film includes outer layer, middle layer and internal layer, and outer layer, middle layer and internal layer obtain the label film by coextrusion film blowing, described outer
Layer and internal layer are located at the two sides of the middle layer, and the polyethylene label film passes through internal layer and packaging material in use
Surface is in contact.
The outer layer is prepared by the following ingredient of content:
High density polyethylene (HDPE) 70-85%,
The polyethylene 10% ~ 20% of metallocene catalysis,
Low density polyethylene (LDPE) 5% ~ 10%,
The sum of mass percent of each component is 100%.
The middle layer is prepared by the following ingredient of content:
High density polyethylene (HDPE) 75-90%,
The polyethylene 10% ~ 25% of metallocene catalysis,
The internal layer is prepared by the following ingredient of content:
Medium density polyethylene 70% ~ 90%,
Low density polyethylene (LDPE) 10% ~ 30%.
Above-mentioned outer layer, middle layer and internal layer account for respectively label film overall thickness 15% ~ 30%, 40% ~ 70% and 15% ~
30%, outer layer, middle layer and internal layer overall thickness are 100%.
Outer layer is one of core of the invention content, on the one hand the material based on high density polyethylene (HDPE) mentions for film
For certain intensity, on the other hand, the polyethylene of metallocene catalysis and low density polyethylene (LDPE) is cooperated to be blended, processability is than highly dense
Degree polyethylene can adjust the processability of film, while the polyethylene molecule compound with regular structure of metallocene catalysis to a certain extent,
It can guarantee that the stress cracking performance of label film, low density polyethylene (LDPE) can then promote the anti-puncture of film to a certain extent
Property.The optimal polyethylene of high density polyethylene (HDPE), metallocene catalysis and the compound proportion of low density polyethylene (LDPE) is 75/15/
10wt%.Resin used is that commercialized blown film grade resins, the melt flow rate (MFR) of high density polyethylene (HDPE) used have been about
0.8 ~ 2.5g/10min, density are about 0.941 ~ 0.963 g/cc.High density polyethylene (HDPE) can be selected but be not limited to Exxon
Mobil produces HDPE-HD 8660.29.The melt flow rate (MFR) of the polyethylene of metallocene catalysis is about 0.5 ~ 5.0g/10min,
Density is about 0.927 ~ 0.936g/cc.The polyethylene of metallocene catalysis can be selected but be not limited to american exxon production
MDPE-MD3505CH.The melt flow rate (MFR) of low density polyethylene (LDPE) used is about 1 ~ 7g/10min, and density is about 0.92 ~
0.925 g/cc, low density polyethylene (LDPE) can be selected but be not limited to the LDPE-LD100AC of Exxon Mobil production.
Middle layer is the two of core of the invention content, and high density polyethylene (HDPE) replaces poly- the third of conventional tags membrane middle layer
Alkene material has the characteristics that higher intensity using high density polyethylene (HDPE), can equally assign label film enough stiffness；Cyclopentadienyl
Polyethylene molecule compound with regular structure, the good toughness of metal catalytic are not susceptible to rupture feelings in preparing label film die cutting process
Condition provides preferable die-cutting performance；Moreover, such middle layer composition has also ensured its effective knot between outer layer and internal layer
It closes, improves the mechanical property of film.The compound proportion of the polyethylene of optimal high density polyethylene (HDPE) and metallocene catalysis is 80/
20wt%.Resin used in middle layer is that commercialized blown film grade resins, the melt flow rate (MFR) of high density polyethylene (HDPE) have been about
0.8 ~ 2.5g/10min, density are about 0.941 ~ 0.963 g/cc.High density polyethylene (HDPE) can be selected but be not limited to Exxon
Mobil produces HDPE-HD 8660.29, and the melt flow rate (MFR) of the polyethylene of metallocene catalysis is about 0.5 ~ 5.0g/10min,
Density is about 0.927 ~ 0.936g/cc.The polyethylene of metallocene catalysis can be selected but be not limited to american exxon production
MDPE-MD3505CH。
Internal layer is the three of core of the invention content, on the one hand the material based on medium density polyethylene mentions for film
For certain intensity, on the other hand, processability can adjust the processability of film than high density polyethylene (HDPE) to a certain extent.
The compound proportion of optimal low density polyethylene (LDPE) and medium density polyethylene is 20/80wt%.Resin used is commercialized
Blown film grade resins, the melt flow rate (MFR) of low density polyethylene (LDPE) used are about 1 ~ 7g/10min, and density is about 0.92 ~ 0.925
G/cc, low density polyethylene (LDPE) can be selected but be not limited to the LDPE-LD100AC of Exxon Mobil production.Medium density polyethylene
Melt flow rate (MFR) is about 0.5 ~ 3.5g/10min, and density is about 0.930 ~ 0.936 g/cc.Medium density polyethylene can select
With but be not limited to Total France production M3509.
Weight (thickness) proportionate relationship in outer layer, middle layer and each comfortable label film overall thickness of internal layer is of the invention
The four of core content, by rationally designing weight (thickness) proportionate relationship of each layer, so that it is good to have label film not only
Stiffness and intensity, and the generation of label rupture event can be reduced in die cutting process, while during guaranteeing coextrusion film blowing
Processability and processing stability.
Inflation film can have the overall thickness between 40 μm and 100 μm.It is preferably between 50 μm and 85 μm
Overall thickness, the especially overall thickness between 65 μm and 85 μm.
Label film of the present invention can be used for preparing the outer label of bottle of shampoo or cosmetics and similar application requirement.
In order to guarantee the quality of polyethylene label film, which is prepared using coextrusion film blowing processing method,
Using three-layer co-extruded blow moulding machine, quality measurer, the label that raw material is related to by quality measurer by foregoing teachings are entered by feed bin
After film ingredient mixes, the extruder that 3 different angles are put is supplied, after draping mechanism and expects pipe are sent to die head respectively
Membrane middle layer and ectonexine are formed, cooling air is blown by fan and is blown into membrane tube film bubble (blow-up ratio 2-3.5), film bubble warp
After outer cooling air ring and internal bubble cooling system are cooling, enter wrap-up after drafting system and corona processor processing and received
It rolls up to get three-layer co-extruded polyethylene label film is arrived.The present invention uses upper blow molding, passes through the adjusting of blow-up ratio, and cooperation
The selection of the melt index of polythene material is preferably being bent so that film has balanced physical property in vertical and horizontal
In stiffness, MD is at least 2.5 times of CD, to guarantee good die-cutting performance and dimensional stability.
Specific embodiment
The features of the present invention and advantage are described in further detail below in conjunction with preferred embodiment.Following implementation is only shown
Example property, those skilled in the art can make obvious modification on this basis, these modifications are also included in the present invention
In the range of.
Embodiment 1
70 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD, the american exxon for taking Exxon Mobil to produce produce
The LDPE-LD100AC low density polyethylene (LDPE) that 20 parts of polyethylene, the Exxon Mobil of MDPE-MD3505CH metallocene catalysis produce
10 parts of outermost resins as label film；Take Exxon Mobil produce 75 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD,
25 parts of the polyethylene intermediate layer resins as label film of the MDPE-MD3505CH metallocene catalysis of american exxon production；
The LDPE-LD100AC low-density of 70 parts of the M3509 medium density polyethylene, Exxon Mobil production that take Total France to produce is gathered
30 parts of the ethylene inner layer resins as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 15%, 70% and 15%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 2), film bubble enters after drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Wrap-up is wound to arrive polyethylene label film.Wherein, extruder barrel temperature range: 1 180 DEG C of area, 2nd area
220 DEG C, 3 205 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；190-220 DEG C of temperature of film mouth.
Embodiment 2
80 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD, the american exxon for taking Exxon Mobil to produce produce
The LDPE- LD100AC low density polyethylene (LDPE) that 15 parts of polyethylene, the Exxon Mobil of MDPE-MD3505CH metallocene catalysis produce
5 parts of outermost resins as label film；Take Exxon Mobil produce 90 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD,
10 parts of the polyethylene intermediate layer resins as label film of the MDPE-MD3505CH metallocene catalysis of american exxon production；
The LDPE-LD100AC low-density of 80 parts of the M3509 medium density polyethylene, Exxon Mobil production that take Total France to produce is gathered
20 parts of the ethylene inner layer resins as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 20%, 60% and 20%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 3), film bubble enters after drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Wrap-up is wound to arrive polyethylene label film.Wherein, extruder barrel temperature range: 1 190 DEG C of area, 2nd area
215 DEG C, 3 200 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；185-210 DEG C of temperature of film mouth.
Embodiment 3
85 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD, the american exxon for taking Exxon Mobil to produce produce
The LDPE- LD100AC low density polyethylene (LDPE) that 10 parts of polyethylene, the Exxon Mobil of MDPE-MD3505CH metallocene catalysis produce
5 parts of outermost resins as label film；Take Exxon Mobil produce 90 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD,
10 parts of the polyethylene intermediate layer resins as label film of the MDPE-MD3505CH metallocene catalysis of american exxon production；
The LDPE-LD100AC low-density of 90 parts of the M3509 medium density polyethylene, Exxon Mobil production that take Total France to produce is gathered
10 parts of the ethylene inner layer resins as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 30%, 40% and 30%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 3.5), film bubble is laggard through drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Enter wrap-up to be wound to get polyethylene label film is arrived.Wherein, extruder barrel temperature range: 1 185 DEG C of area, 2
220 DEG C of area, 3 200 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；190-220 DEG C of temperature of film mouth.
Comparative example 1
80 parts of HDPE-HD8660.29 high density polyethylene (HDPE), the Exxon Mobil for taking Exxon Mobil to produce produce
20 parts of the LDPE-LD100AC low density polyethylene (LDPE) outermost resins as label film；The HDPE-HD for taking Exxon Mobil to produce
8660.29 75 parts of high density polyethylene (HDPE)s, Exxon Mobil production 25 parts of LDPE- LD100AC low density polyethylene (LDPE) be used as label
The intermediate layer resin of film；70 parts of M3509 medium density polyethylene, the Exxon Mobil for taking Total France to produce produce
Inner layer resin of 30 parts of the LDPE- LD100AC low density polyethylene (LDPE) as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 15%, 70% and 15%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 2), film bubble enters after drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Wrap-up is wound to arrive polyethylene label film.Wherein, extruder barrel temperature range: 1 180 DEG C of area, 2nd area
220 DEG C, 3 205 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；190-220 DEG C of temperature of film mouth.
Comparative example 2
90 parts of HDPE-HD8660.29 high density polyethylene (HDPE), the Exxon Mobil for taking Exxon Mobil to produce produce
10 parts of the LDPE-LD100AC low density polyethylene (LDPE) outermost resins as label film；The HDPE-HD for taking Exxon Mobil to produce
8660.29 90 parts of high density polyethylene (HDPE)s, Exxon Mobil production 10 parts of LDPE-LD100AC low density polyethylene (LDPE) be used as label
The intermediate layer resin of film；The LDPE- that 80 parts of M3509 medium density polyethylene, the Exxon Mobil of Total France's production produce
20 parts of the LD100AC low density polyethylene (LDPE) inner layer resins as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 20%, 60% and 20%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 3.5), film bubble is laggard through drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Enter wrap-up to be wound to get polyethylene label film is arrived.Wherein, extruder barrel temperature range: 1 190 DEG C of area, 2
215 DEG C of area, 3 200 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；185-210 DEG C of temperature of film mouth.
Comparative example 3
60 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD, the american exxon for taking Exxon Mobil to produce produce
The LDPE-LD100AC low density polyethylene (LDPE) that 20 parts of polyethylene, the Exxon Mobil of MDPE-MD3505CH metallocene catalysis produce
20 parts of outermost resins as label film；Take Exxon Mobil produce 70 parts of 8660.29 high density polyethylene (HDPE) of HDPE-HD,
30 parts of the polyethylene intermediate layer resins as label film of the MDPE-MD3505CH metallocene catalysis of american exxon production；
The LDPE-LD100AC low-density of 90 parts of the M3509 medium density polyethylene, Exxon Mobil production that take Total France to produce is gathered
10 parts of the ethylene inner layer resins as label film.
Wherein, for each layer raw material dosage accounts for the quality percentage of entire polyethylene label film, outer layer, middle layer and interior
Layer is respectively 30%, 40% and 30%.
Preparation process: quality measurer, matter are entered by feed bin according to above-mentioned formula ingredient using three-layer co-extruded blow moulding machine
The extruder that 3 different angles of supply are put after amount measurer is mixed raw material by said ratio, through draping mechanism and expects pipe
It is respectively formed membrane middle layer and ectonexine after sending to die head, cooling air is blown by blower, membrane tube is blown into film bubble (inflation
Than for 4), film bubble enters after drafting system and corona processor processing after outer cooling air ring and internal bubble cooling system are cooling
Wrap-up is wound to arrive polyethylene label film.Wherein, extruder barrel temperature range: 1 185 DEG C of area, 2nd area
220 DEG C, 3 200 DEG C of areas, 4 185 DEG C of areas, 175 DEG C of draping runner；190-220 DEG C of temperature of film mouth.
Specific experiment result is as shown in table 1 below:
| Number | Thickness (μm) | Tensile strength (N/mm2) MD/CD | Bending break stiffness (mN) MD/CD | Die-cutting performance |
| Embodiment 1 | 65 | 59.0/32.4 | 25/10 | It is excellent |
| Embodiment 2 | 75 | 64.5/30.7 | 27/11 | It is excellent |
| Embodiment 3 | 85 | 61.2/34.9 | 28/9 | It is excellent |
| Comparative example 1 | 65 | 54.7/27.2 | 25/16 | Generally |
| Comparative example 2 | 75 | 52.9/26.5 | 30/21 | Difference |
| Comparative example 3 | 85 | 50.2/24.1 | 16/10 | Difference |
Tensile strength: tensile strength is determined according to ISO 527；
Elasticity modulus: bending break stiffness is determined according to ISO 2493:1992；
Die-cutting performance: being die cut polyethylene label film sample by die-cutting machine, and die-cutting machine speed is 300 pieces/point
Clock, the rupture event according to label determines whether label film die-cutting performance is excellent, excellent: rupture ratio is less than 1%.It is general: rupture
Ratio 1-5%, poor: rupture ratio is greater than 5%.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (2)
1. a kind of polyethylene label film, it is characterised in that: by coextrusion film blowing processing method obtain comprising outer layer, middle layer and
The composite label film of internal layer,
The outer layer is prepared by the following ingredient of content:
High density polyethylene (HDPE) 80-85%,
The polyethylene 10% ~ 15% of metallocene catalysis,
Low density polyethylene (LDPE) 5%,
The sum of mass percent of each component is 100%,
The middle layer is prepared by the following ingredient of content:
High density polyethylene (HDPE) 90%,
The polyethylene 10% of metallocene catalysis,
The internal layer is prepared by the following ingredient of content:
Medium density polyethylene 80% ~ 90%,
Low density polyethylene (LDPE) 10% ~ 20%,
Above-mentioned outer layer, middle layer and internal layer account for 15% ~ 30%, 40% ~ 70% and the 15% ~ 30% of label film overall thickness respectively, outer layer,
Middle layer and internal layer overall thickness are 100%, and the polyethylene label film has the overall thickness between 40 μm and 100 μm；
High density polyethylene (HDPE) used in the outer layer is that Exxon Mobil produces HDPE-HD 8660.29, and metallocene catalysis gathers
Ethylene is the MDPE-MD3505CH of american exxon production, and low density polyethylene (LDPE) is the LDPE- of Exxon Mobil production
LD100AC；
High density polyethylene (HDPE) used in the middle layer is that Exxon Mobil produces HDPE-HD 8660.29, metallocene catalysis
Polyethylene is the MDPE-MD3505CH of american exxon production；
Low density polyethylene (LDPE) used in the internal layer is the LDPE-LD100AC of Exxon Mobil production, and medium density polyethylene is method
The M3509 of national highway Da Er production；
The preparation method of the polyethylene label film includes: to be prepared by coextrusion film blowing processing method, altogether using three layers
Extrusion blow molding machine enters quality measurer by feed bin, and after quality measurer mixes each layer ingredient of label film, supply 3 is not
With the extruder that angle is put, it is respectively formed membrane middle layer and ectonexine after draping mechanism and expects pipe are sent to die head, by wind
Machine is blown into cooling air and membrane tube is blown into film bubble, and film bubble is filled after outer cooling air ring and internal bubble cooling system are cooling with drawing-off
It sets and enters wrap-up after corona processor processing and wound to get to three-layer co-extruded polyethylene label film, in use
Blow molding's technique carries out blowfilm shaping, and blow-up ratio is controlled in 2-3.
2. a kind of application of polyethylene label film, the polyethylene label film described in claim 1 are used to prepare shampoo
Or the outer label of bottle that cosmetic applications require.
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| CN110328821B (en) * | 2019-07-22 | 2021-10-12 | 广东安德力新材料有限公司 | Extinction label film, preparation method thereof and preparation method of transparent label film |
| CN110421942B (en) * | 2019-08-02 | 2023-07-07 | 汕头市安雅塑胶制品有限公司 | Label film and preparation method thereof |
| CN112356548B (en) * | 2020-11-11 | 2023-06-02 | 享贺实业发展(上海)有限公司 | High-temperature-resistant electrostatic protection film and preparation process thereof |
| CN112677605B (en) * | 2020-12-23 | 2023-03-24 | 上海紫江彩印包装有限公司 | Label film, aluminum-plated label film, and preparation method and application thereof |
| CN113146993A (en) * | 2021-01-07 | 2021-07-23 | 佛山市南海利达印刷包装有限公司 | Method for producing stretched label film |
| CN113246569B (en) * | 2021-05-19 | 2023-06-06 | 上海紫江彩印包装有限公司 | Polyethylene label film and preparation method and application thereof |
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